I'm sorry to hear that you're feeling weak and low on energy. Calcium and vitamin D deficiencies can contribute to these symptoms because both are essential for bone health and muscle function.

Here are some steps you can take:

• Supplementation: A commonly used supplement is a combination of calcium and vitamin D, such as Shelcal Syrup, which contains calcium and cholecalciferol (vitamin D3). This helps improve calcium levels and supports bone strength. However, the exact dosage should be determined by your doctor based on your specific condition.

• Diet: Include calcium-rich foods like milk, yogurt, paneer, and leafy green vegetables (e.g., spinach, fenugreek). For vitamin D, exposure to sunlight for about 15-20 minutes daily helps your body produce vitamin D naturally. Foods like fortified milk, eggs, and fish (if non-vegetarian) can also help.

• Lifestyle: Regular moderate exercise, especially weight-bearing activities like walking or yoga, can improve bone health and energy levels.

• Medical Evaluation: Since your symptoms and deficiencies require proper management, please consult an endocrinologist or a general physician. They can assess your condition, recommend appropriate tests if needed, and tailor treatment accordingly.

If you experience worsening weakness, bone pain, or other concerning symptoms, seek medical attention promptly.To narrow down potential causes, we will need some more information.I understand you're feeling weak and lacking energy, and you have a calcium and vitamin D deficiency. To give you the best advice, could you please tell me your age and gender?